[The written portion of the guide covers Summoner's Rift only. Dominion you are on your own]

Kha'Zix is the most broken champion I have ever played. Everybody playing him and failing does not know how to build him. Build him right, and he's OP. Wrecking games is consistent. I do not really want to give out this information, because I am afraid my secret will be out. Riot will nerf him if everybody built him this way. So give this guide a chance, and if you wreck with my guide, I'd be happy to read your feedback. Lets get started, shall we?

+ High Mobility
+ Most OP escape / gap closer
+ Q Hits like Muhammed Ali
+ Tier 1 Jungler
+ Can solo dragon fast after Ninja Tabi, and Wriggle's Lantern
+ Home wrecker
+ King of cleaning up

- Squishy
- Vulnerable to CC
- Enemy team complains
- Exposure of this build will get Kha'Zix nerfed.

21/0/9

Offence: 21
Nothing to explain. You want a nice early jungle.

Utility: 9
YOU WILL NEED !

[Flat attack damage Reds and Quints]
Early game AD is important for your first ganks. Your will hit hard, and your jungle will be easy. Synergizes well with Lifesteal masteries. I take them over Armor Pen, because I get Brutalizer early. Brutalizer will be the Armor Pen you need for mid game. Late game you will have Last Whisper. More Armor Pen is overkill if you ask me.

The rest speaks for itself. (Yellows, and Blues)

Before I talk about Items, I'd like to explain why these items work well on Kha'Zix.

Kha'Zix Is a melee CASTER! That's right, a Caster. DEALWITHIT. Now let's talk about what that means. That means no Phantom Dancers. Your main source of damage comes from abilities, so your items should make them count. You are not going to be sitting there auto-attacking anybody for extended periods of time. Kha'Zix cannot survive extended exposure to fights. You will rely on your mobility, and cooldowns to do what you need to do. Think of him like Shaco. (btw ap shaco is bad, stop playing him like that. Infact, build shaco the exact same way you build Kha'Zix, but with an Infinity Edge instead of a Maw of Malmortius, and Ionian Boots of Lucidity.) Anyways, back on topic. You're going to be using your abilities to do deceptive damage. The longer you're in a fight, the more likely you are to die. So attack speed, crit, and excessive lifesteal, is not worth your money. Building too tanky makes you worthless, because your role is to BURST down squishies. With that, let's explain your items in order.

EARLY GAME:

Cloth Armor, and 5 Health Potions
This is so you don't die jungling. You need FULL or almost FULL health to gank. You are squishy, never forget that.

Boots
You will need to get these on your first trip back. Positioning is everything for Kha'Zix. Early movement speed is key to successful ganking. If you can't afford Wriggle's Lantern, get Madred's Razors, or any of it's prerequisites before Vampiric Scepter. Get Health Potions instead. Lifesteal is solely for having a good amount of health for your ganks, not to sustain in fights. (lifesteal is for healing off minions so you don't have to go back). Madred's Razors will speed up your jungle greatly.

Wriggle's Lantern
Prioritize this item before upgrading your boots. The ward will make you a terror in the jungle. Place it near the enemy Red Buff, and counter jungle. (or not)

Ninja Tabi / Mobility Boots
I'll make this simple. These are the only boots you should get. Ninja Tabi will be Kha'Zix's greatest defence. You will be building him very squishy, so you need these to greatly reduce physical damage. Mercury's Treads are unnecessary in my opinion. Your leap will get you out of most situations better than these expensive boots. If you get hard CC'd, you will most likely die whether or not you have them. Positioning and knowing when to go in is your survival. You need all the money you can get to hit HARD. Your source of Magic Resistance, will come from the Hexdrinker you will be building later. Mobility Boots are great for ganking often, and coming to your team's aid. Only pick these up if you are confident that the other team sucks. I know it does not synergize with your Void Assault, but the reason I buy them has nothing to do with that ability. When in doubt, buy a Ninja Tabi, it's cheap, it reduces physical damage greatly, and they're swag.

MID GAME:

The Brutalizer / Hexdrinker

The Brutalizer is MANDATORY. This item will give you Cooldown-Reduction and Armor Pen. Everything you need to be a terror mid game. You will notice your Taste Their Fear hits like a holocaust. The Cooldown-Reduction will also make your Leap more reliable as a form of escape and gap-closer. But The Brutalizer is not always the best pick. You have a Ninja Tabi, so your armor for the whole game is covered. If you are behind, you will need to be a bit more tanky. I suggest getting a Hexdrinker in games that are not going so well. Especially if there is a Karthus, Lux, Mordekaiser, etc. If the need is more damage, always go with the The Brutalizer over the Hexdrinker. After you get a The Brutalizer, get a Hexdrinker.

LATE GAME:

Last Whisper

Keep your Taste Their Fear Strong into late game.

Maw of Malmortius

You have a Hexdrinker... finish it. Gives you more damage, must I explain?

Bloodthirster

Nothing peeves me more than rushing this item. This is a late game item. You have many item slots filled, and going back for items becomes less important. You have almost completed your full build, and Items from here on out do not help much more. You need this item to stay out there fighting. You need to be out there for your team. Heal from fights by auto attacking NPCs instead of going back. OOM? Get blue buff. You have Smite so tell Malzahar to suck it.

Youmuu's Ghostblade

You have a The Brutalizer... finish it. Use the active to 1v1, take a tower down, or for the speed.

Guardian Angel

I'm not explaining this.




SITUATIONAL ITEMS:


Black Cleaver: I've been testing this item out. If your enemy team has a lot of vulnerable squishies, take this over Last Whisper. But if the enemy jungler has over 200 armor, consider keeping Last Whisper so you can fight him in the jungle.

Infinity Edge: I personally never take this item, but if you catch yourself in a lot of 1v1 situations, pick this up... AFTER Youmuu's Ghostblade. Youmuu's Ghostblade active + Infinity Edge = broken in a 1v1.

Frozen Heart: Take this if you're playing like trash and the enemy team has a lot of armor. If you buy this item, it seems like this is the only time you would want to evolve Void Spike, just for the slow utility. But for the love of god, keep Leap.

Taste Their Fear
Your main damage ability. Hits really hard when the target is isolated. Max level this 1st. Evolve this ability second.

Void Spike
Jungle sustain / KS ability. Max level this 2nd. Do not evolve this ability.

Leap
Gap-closer / Escape ability. Make sure you have this in your back pocket when you are in sketchy areas. Level this ability last. Evolve this ability 1st.

Void Assault

Escape or gap-closing ability. This lasts 3 seconds for each stealth duration. DO NOT RELY ON IT TOO MUCH FOR ESCAPING. Evolve this third.

ABILITY EVOLUTION SEQUENCE:

Leap > Taste Their Fear > Void Assault
(do not evolve Void Spike

IF YOU DO NOT MEMORIZE CD DURATIONS, YOU WILL DIE A LOT. LOL DO U HAVE A LEARNING DISABILITY?

Smite: U R JUNGLR BR0

Flash: OP

(level up: Void Spike

1: Get help with wolves, kill em.

2: Get a nice leash on blue. Use Smite.

(level up: Taste Their Fear

3: Kill wraiths

4: Kill red. If you have it up, use Smite. (kill small mobs first to isolate red lizard for extra damage on your Q)

(level up: Leap)

5: Gank, or kill golems, then gank. If you have to go back, you need more practice jungling. Don't get mad at me.

6: GANK, GANK, JUNGLE, COUNTER JUNGLE, GANK, rinse and repeat all game long.

Warding the Jungle, makes you a huge threat. Kill isolated roamers. But don't over estimate yourself.

Counter Jungle enemy Wraiths, then leap over the wall to gank mid.

Your ganks will be much more successful with RED BUFF.

You can easily go OOM. Never roam enemy jungle if you are too OOM too Leap.

Avoid fighting tanks, you won't always be able to kill them fast enough before their team comes to their aid.

Tell bottom's support to pink ward the bush. Make sure to give them ganks if they do.

Ganking can go really wrong if you are below 80% health.

Take the kills early game, it helps you with jungling. After about 3 kills, never steal kills from your AD carry. Jack on everyone else.

Don't be afraid to kill steal! (if you're bad, never do this.)

As soon as you Leap, you are committed.

Stay behind your team when engaging.

Hide in bushes when your team is about to engage. Make sure that you can Leap from the bush into the fight. The enemy sometimes falls for this trick. They engage a fight they thought they could win, if you were not there.

Bait the enemy, and Leap away.

Kha'Zix has not been out that long, but I've had great success with the build I am sharing.

If you like my guide, please give me a thumbs up, and/or a comment. Constructive criticism is welcome, but I am not sure if I have any ducks to give.